Income Taxes - Narrative (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended		12 Months Ended
	Feb. 29, 2012	Jan. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Tax Credit Carryforward [Line Items]
Statuatory federal rate			35.00%
Unrecognized Tax Benefits			$ 105	$ 861	$ 950
Due to expiration of statute				423
Change in unrecognized tax benefits, forecast period			12 months
Federal income tax refund	2,025	6,344	3,184	6,724	4,430
Minimum
Tax Credit Carryforward [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound			0
Maximum
Tax Credit Carryforward [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound			$ 60
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Returns filed			7
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Returns filed			29